This is copy/pasted from a tutorial I did on it at FreeFlightDesign.com
PART ONE
Basics of creating your own AI traffic in FS2004.
This is a tutorial for creating your own AI traffic. First, the basics.
First off, find and download the latest build of TTools.exe. It should also come with 'CollectAirports.exe' which you will also need.
NOTE: This is the 'easy' and quick way of making airfiles. You 'can' download menu style flight plan makers, but they usually have alot of bugs and wont always find your mistakes that will keep your planes from flying. After you do this method 'once' you will find its the best, quickest method there is. (At least for me).
A traffic BGL is created from 3 Text files, or TXT files.
* Airplanes file which your flightplans will use
* Airports list, which your flightplans will also use
* Your Flightplans, which comprise of strings or sentences.
A flightplan string starts at one point, and 'must' return to that point. Thus if just one hop and return (2 airports), then the first part of the string is to
the first hop, the second is 'return to home'. Thus the airport you start at will actually be at the end of the string, since that is where you come back to.
If you have say 4 hops around the land, the last one is your return to home. (FS will automatically place your plane at the last hop as the starting point).
Each flightplan 'executes' at a time you set for it. Time for a plane to take-off is Zulu/Grennich time, so what ever time of day it would be at GMT in that countries location would be your time entry. Then you also have 'every 2 hours, every 4 hours, every 6 hours, etc, including every 24 hours, and 'weekly'. Your flightplan 'must' fly once a week or it wont compile nor function, leaving the aircraft to 'not' show up.
Note; If you want a plane to just be 'parked' at an airfield all the time, have it only fly at night, one day a week, like 3AM for a quick hop locally on a Sunday
night. Its not as fun though to see the planes 'come to life'.
[CONTENTS OF TEXT FILES]
Here are some samples of text files for having Whirlwinds in FS9.
Aircraft_Whirlwind.txt <-----------------Name of TXT document
NOTE: 250 in the strings below denounts the max airspeed you wish these planes to fly at. Set to what you wish.
AC#884,250,"Westland Whirlwind Blue Gray"
AC#885,250,"Westland Whirlwind Weathered"
Next document.......................................... .................................................. ..................................
Below is the airports which the Whirlwind flightplans will use. These are copied off of the FS2004 Airports list program which makes a list of all
airports in your (your) FS2004. If you added an airport recently (as I did here, Twinwoods airbase), then I have to create a new list and find its GPS
location, and copy paste it into my 'airports' list.
Airports_Whirlwind.txt <------------ Name of TXT document
SK01,N51* 39.42',E0* 43.64',89
X3TW,N52* 10.94',W0* 29.39',269
Next document.......................................... .................................................. ..................................
This is your flight plans. You can easily start your own list from a single string, input your own airfields, and change the times to those you wish to use instead. Also remember to input the aircraft you wish, which below uses #885 and #885.
Flightplans_Whirlwind.txt <------------ Name of TXT document
AC#885,N1234,1%,2Hr,VFR, 08:00:00,TNG09:30:00,050,R,0000,X3TW, 10:00:00,TNG11:30:00,050,R,0000,SK01
AC#885,N1234,1%,2Hr,VFR, 08:01:00,TNG09:32:00,050,R,0000,X3TW, 10:02:00,TNG11:34:00,050,R,0000,SK01
AC#884,N1234,1%,2Hr,VFR, 12:06:00,TNG13:38:00,050,R,0000,SK01, 14:05:00,TNG15:19:00,050,R,0000,X3TW
[FLIGHTPLANS DATA STRING]
Here are some break downs of a regular string, as shown above
AC#884 <---- airplane designation from airplanes list. (I pulled those numbers from the top of my head. I dont think TTools will go higher then
2,000 though.
N1234 <---- Aircraft designation N number (you can change them if you are using the same planes such as fighters, etc)
1% <------Percentage above is the lowest 'setting' your plane will show up at. If I had 50% in a string, and I had AI traffic in FS2004 set to 30%, then
the planes wouldnt show up.
2Hr <----- Denotes how often this plane flies (Remember to include time to land with moderate traffic, taxi, and park. If too short, plane wont show
up).
VFR <-------- Type of flight plan. IFR takes a while longer and will tie up air traffic control with chatter, etc. Options; VFR and IFR
12:06:00,TNG13:38:00,050,R,0000,SK01 <------ Start time, TNG means if early, do touch and goes, (leave out if you dont want that), arrival time,
Altitude, which here, 050 is 5,000 feet, (FL 050).
SK01 <----- First hop
14:05:00,TNG15:19:00,050,R,0000,X3TW <----------- Last hop which returns you to 'this' airfield. (FS sees this as your starting point).
Note; I forgot what R means, lol.. arrghh